Sour

azedo

(having an acidic, sharp or tangy taste)

carrancudo

(peevish or bad-tempered)

coalhado

(made rancid by fermentation, etc.)

rançoso

(tasting or smelling rancid)

ácido

((of soil) excessively acidic and thus infertile)

azedume

(the sensation of a sour taste)

azedar

(to make sour)

azedar

(to become sour)